Development of UV dosimeter for UV flow device using fluorescent analysis and photocatalytic reaction.

研究了一种用于紫外光流动装置的快速、方便地测量紫外辐射剂量的化学剂量计。采用荧光测定法和光学增白剂，在类似饮用水的高透明度条件下进行。考察了使用光催化剂的反应促进性和假设应用多色灯消毒效率的波长依赖性。实验发现，光增白剂FBA-1既不依赖于浓度，也不依赖于紫外光强度，是无活性部分的一级反应物质，在高透明度条件下，光催化剂的增感作用不明显。此外，还采用扩散光模型和层流模型对流动装置中的紫外线剂量分布进行了模拟。生物剂量计和FBA-1剂量计的模拟结果和实验结果误差在20%左右。此外，还观察到短波长光的消毒效率较高。然而，由于短波长的影响较小，考虑到灯的输出光谱，人们认为这种荧光化学剂量计也可以应用于多色灯。

The chemical dosimeter that measures the UV irradiation dose promptly and handily for UV flow device was examined. The fluorescent measurement and the optical whitening agent were used to do under the high transparency condition similar as drinking water. The reaction promotion using the photocatalyst and the wavelength dependency of disinfection efficiency assuming to apply the polychromatic lamp were examined. It was observed that 0ptical whitening agent FBA-1 were neither the concentration nor the UV intensity dependency, and first order reaction material withno active moiety, and enhancement by photocatalyst wasn’t confirmed in high transparentcondition. In addition, the simulation of the UV dose distribution that assumed thediffusion light model and the laminar flow model in the flow device was implemented. And the results of simulation and the outcome of an experimental results of the bio dosimeter and FBA-1 dosimeter were within about 20 percent in error margin. Moreover, it was observed that the disinfection efficiency of short wavelength light was higher. However, it was thought to be able to apply this fluorescent-chemical dosimeter also to the polychromatic lamp because the influence of short wavelength was a little considering output spectrum of the lamp.